[PQL Exec] Calculate derived measure: [u'\u51c0\u8d44\u4ea7\u6536\u76ca\u7387ttm', u'100_PB', u'/'] failed.点选股、回测什么的就会出现这样，请问大家有没有遇到，怎么解决？
[PQL Exec] Calculate derived measure: [u'\u51c0\u8d44\u4ea7\u6536\u76ca\u7387ttm', u'100_PB', u'/'] failed.
[PQL Exec] Calculate derived measure: [u'\u51c0\u8d44\u4ea7\u6536\u76ca\u7387ttm', u'100_PB', u'/'] failed.点选股、回测什么的就会出现这样，请问大家有没有遇到，怎么解决？
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